Eurotunnel , which manages and operates the Channel Tunnel, issued a statement saying it was disappointed with the decision to postpone the prosecution of Mr Haroun now that he had been granted asylum.

A spokesman added: “He not only caused significant disruption to Eurotunnel and to the many freight and passenger customers travelling at the time, he also put his own life and that of others at risk by his actions.

“This decision will only act as an encouragement to other migrants to seek to gain illegal entry to the UK.”

At the time of the incident Eurotunnel said it hoped “the force of law will be used and justice done” to deter other migrants from attempting similar dangerous trips.

Friends of Mr Haroun said he made the journey because Sudan is “one of the poorest countries in the world it has been afflicted by a series of incompetent and corrupt governments, war, drought, famine and a staggering foreign debt”.

Chunnel hell: Drivers' fears made front page of Mirror in October

He had travelled across north Africa and sailed across the Mediterranean and is said to have “climbed four fences’ and avoided 400 security cameras before he entered the Channel Tunnel at Calais.

Alarms were triggered, leading to train services being suspended for two hours during Mr Haroun’s walk, causing delays for passengers and freight services.

Last October the Mirror revealed the horrifying extent of the migrant crisis at Calais with dramatic pictures showing how increasingly desperate migrants were storming onto the tracks in “life or death” bids to get to Britain.

British train drivers took photographs of the mass invasions of the tracks in the hope of forcing the government to act fearing there would be even more casualties after two migrants died under trains.

Despite new security measures, including a new fence and 100 extra security guards, mass invasions of the Channel Tunnel have continued, disrupting train services.